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How to use mountIncompleteClassComponent method in Playwright Internal

Best JavaScript code snippet using playwright-internal

0__index.js

...207        case IncompleteClassComponent: {208            var _Component3 = workInProgress.type;209            var _unresolvedProps4 = workInProgress.pendingProps;210            var _resolvedProps4 = workInProgress.elementType === _Component3 ? _unresolvedProps4 : resolveDefaultProps(_Component3, _unresolvedProps4);211            return mountIncompleteClassComponent(current$$1, workInProgress, _Component3, _resolvedProps4, renderExpirationTime);212        }213        case SuspenseListComponent: {214            return updateSuspenseListComponent(current$$1, workInProgress, renderExpirationTime);215        }216        case FundamentalComponent: {217            if (enableFundamentalAPI) {218                return updateFundamentalComponent$1(current$$1, workInProgress, renderExpirationTime);219            }220            break;221        }222        case ScopeComponent: {223            if (enableScopeAPI) {224                return updateScopeComponent(current$$1, workInProgress, renderExpirationTime);225            }...

beginWork.js

Source: beginWork.js

...329      const resolvedProps =330        workInProgress.elementType === Component331          ? unresolvedProps332          : resolveDefaultProps(Component, unresolvedProps);333      return mountIncompleteClassComponent(334        current,335        workInProgress,336        Component,337        resolvedProps,338        renderExpirationTime,339      );340    }341    case SuspenseListComponent: {342      return updateSuspenseListComponent(343        current,344        workInProgress,345        renderExpirationTime,346      );347    }...

ReactFiberBeginWork.js

Source: ReactFiberBeginWork.js

...272      const resolvedProps =273        workInProgress.elementType === Component ?274        unresolvedProps :275        resolveDefaultProps(Component, unresolvedProps);276      return mountIncompleteClassComponent(277        current,278        workInProgress,279        Component,280        resolvedProps,281        renderExpirationTime,282      );283    }284    case DehydratedSuspenseComponent: {285      if (enableSuspenseServerRenderer) {286        return updateDehydratedSuspenseComponent(287          current,288          workInProgress,289          renderExpirationTime,290        );...

Using AI Code Generation

1const { mountIncompleteClassComponent } = require('playwright-core/lib/server/injected/componentUtils');2const { Page } = require('playwright-core/lib/server/page');3const { ElementHandle } = require('playwright-core/lib/server/dom');4const page = new Page(null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null);5const elementHandle = new ElementHandle(page, null, null, null, null, null, null, null, null, null, null, null, null);6const component = mountIncompleteClassComponent(elementHandle, 'TestComponent', 'path/to/TestComponent');7const state = component.state;8const props = component.props;9const context = component.context;10const updater = component.updater;11const forceUpdate = component.forceUpdate;12const setState = component.setState;

Using AI Code Generation

1const { mountIncompleteClassComponent } = require('playwright/lib/server/injected/componentUtils');2const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');3const { Page } = require('playwright/lib/server/page');4const { Frame } = require('playwright/lib/server/frame');5const { JSHandle } = require('playwright/lib/server/injected/injectedScript');6const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');7const { mountIncompleteClassComponent } = require('playwright/lib/server/injected/componentUtils');8const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');9const { Page } = require('playwright/lib/server/page');10const { Frame } = require('playwright/lib/server/frame');11const { JSHandle } = require('playwright/lib/server/injected/injectedScript');12const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');13const { mountIncompleteClassComponent } = require('playwright/lib/server/injected/componentUtils');14const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');15const { Page } = require('playwright/lib/server/page');16const { Frame } = require('playwright/lib/server/frame');17const { JSHandle } = require('playwright/lib/server/injected/injectedScript');18const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');19const { mountIncompleteClassComponent } = require('playwright/lib/server/injected/componentUtils');20const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');21const { Page } = require('playwright/lib/server/page');22const { Frame } = require('playwright/lib/server/frame');23const { JSHandle } = require('playwright/lib/server/injected/injectedScript');24const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');25const { mountIncompleteClassComponent } = require('playwright/lib/server/injected/componentUtils');26const { ElementHandle } = require('playwright/lib/server/injected/injectedScript');27const { Page } = require('playwright

Using AI Code Generation

1const { mountIncompleteClassComponent } = require('playwright/lib/server/frames');2const { test } = require('@playwright/test');3test('test', async ({page}) => {4  const component = await mountIncompleteClassComponent(page, {5      class MyComponent extends React.Component {6        render() {7          return <div>Hello World</div>;8        }9      }10  });11  const text = await component.textContent();12  expect(text).toBe('Hello World');13});

Using AI Code Generation

1const { mountIncompleteClassComponent } = require('@playwright/test/lib/test');2const { expect } = require('@playwright/test');3class MyComponent {4  constructor() {5    this._counter = 0;6  }7  render() {8    this._counter++;9    return `Counter is ${this._counter}`;10  }11}12test('Counter test', async ({ page }) => {13  const component = await mountIncompleteClassComponent(page, MyComponent);14  const firstRender = await component.render();15  expect(firstRender).toBe('Counter is 1');16  const secondRender = await component.render();17  expect(secondRender).toBe('Counter is 2');18});19test('Counter test', async ({ page }) => {20  const component = await mountIncompleteClassComponent(page, MyComponent);21  const firstRender = await component.render();22  expect(firstRender).toBe('Counter is 1');23  const secondRender = await component.render();24  expect(secondRender).toBe('Counter is 2');25});26test('Counter test', async ({ page }) => {27  const component = await mountIncompleteClassComponent(page, MyComponent);28  const firstRender = await component.render();29  expect(firstRender).toBe('Counter is 1');30  const secondRender = await component.render();31  expect(secondRender).toBe('Counter is 2');32});33test('Counter test', async ({ page }) => {34  const component = await mountIncompleteClassComponent(page, MyComponent);35  const firstRender = await component.render();36  expect(firstRender).toBe('Counter is 1');37  const secondRender = await component.render();38  expect(secondRender).toBe('Counter is 2');39});40module.exports = {41};42import { expect } from '@playwright/test';43import { MyComponent } from './test';44test('Counter test', async ({ page }) => {45  const component = await mountIncompleteClassComponent(page, MyComponent);46  const firstRender = await component.render();47  expect(firstRender).toBe('Counter is 1');48  const secondRender = await component.render();49  expect(secondRender).toBe('Counter is 2');50});51test('Counter test', async ({ page }) => {

Using AI Code Generation

1const { mountIncompleteClassComponent } = require('playwright');2const { TestComponent } = require('./testComponent');3const testComponent = mountIncompleteClassComponent(TestComponent);4testComponent.setProps({ name: 'John' });5testComponent.setProps({ name: 'Jane' });6testComponent.setProps({ name: 'Jack' });7const React = require('react');8const { mount } = require('enzyme');9const { Component } = require('playwright');10class TestComponent extends Component {11  constructor(props) {12    super(props);13    this.state = {14    };15  }16  static getDerivedStateFromProps(props, state) {17    if (props.name !== state.name) {18      return { name: props.name };19    }20    return null;21  }22  render() {23    return <div>{this.state.name}</div>;24  }25}26module.exports = { TestComponent };

Using AI Code Generation

1const { mountIncompleteClassComponent } = require('playwright-core/lib/server/supplements/mountIncompleteClassComponent');2const { Page } = require('playwright-core/lib/server/page');3const { page } = require('./playwright');4const mount = (component, props) => mountIncompleteClassComponent(page, component, props);5const getProps = async (selector) => {6  const props = await page.evaluate((selector) => {7    const element = document.querySelector(selector);8    return element.props;9  }, selector);10  return props;11};12const setProps = async (selector, props) => {13  await page.evaluate((selector, props) => {14    const element = document.querySelector(selector);15    element.setProps(props);16  }, selector, props);17};18const getState = async (selector) => {19  const state = await page.evaluate((selector) => {20    const element = document.querySelector(selector);21    return element.state;22  }, selector);23  return state;24};25const setState = async (selector, state) => {26  await page.evaluate((selector, state) => {27    const element = document.querySelector(selector);28    element.setState(state);29  }, selector, state);30};31const getContext = async (selector) => {32  const context = await page.evaluate((selector) => {33    const element = document.querySelector(selector);34    return element.context;35  }, selector);36  return context;37};38const setContext = async (selector, context) => {39  await page.evaluate((selector, context) => {40    const element = document.querySelector(selector);41    element.setContext(context);42  }, selector, context);43};44const getRefs = async (selector) => {45  const refs = await page.evaluate((selector) => {46    const element = document.querySelector(selector);47    return element.refs;48  }, selector);49  return refs;50};51const setRefs = async (selector, refs) => {52  await page.evaluate((selector, refs) => {53    const element = document.querySelector(selector);54    element.setRefs(refs);55  }, selector, refs);56};57const getInstance = async (selector) => {58  const instance = await page.evaluate((selector) => {59    const element = document.querySelector(selector);

Using AI Code Generation

1const { mountIncompleteClassComponent } = require('@playwright/test');2const { MyComponent } = require('./my_component');3const { Page } = require('@playwright/test/types/types');4async function main() {5  const page = new Page();6  const component = await mountIncompleteClassComponent(page, MyComponent);7}8main();9const { Component } = require('@playwright/test');10class MyComponent extends Component {11  constructor(page) {12    super(page);13    this.name = 'my-component';14  }15}16module.exports = { MyComponent };17const { test } = require('@playwright/test');18const { MyComponent } = require('./my_component');19test('test my component', async ({ page }) => {20  const component = await mountIncompleteClassComponent(page, MyComponent);21});22import { test } from '@playwright/test';23import { MyComponent } from './my_component';24test('test my component', async ({ page }) => {25  const component = await mountIncompleteClassComponent(page, MyComponent);26});27import { test, mountIncompleteClassComponent } from '@playwright/test';28import { MyComponent } from './my_component';29test('test my component', async ({ page }) => {30  const component = await mountIncompleteClassComponent(page, MyComponent);31});32import { test, mountIncompleteClassComponent } from '@playwright/test';33import { MyComponent } from './my_component';34import { Page } from '@playwright/test/types/types';35test('test my component', async ({ page }: { page: Page }) => {36  const component = await mountIncompleteClassComponent(page, MyComponent);37});

Using AI Code Generation

1import { mountIncompleteClassComponent } from 'playwright-internal';2import { MyComponent } from './MyComponent.js';3const component = mountIncompleteClassComponent(MyComponent, { name: 'John' });4export class MyComponent {5  constructor(props) {6    this.props = props;7  }8  render() {9    return `<div>Hello ${this.props.name}</div>`;10  }11}12import { mountIncompleteClassComponent } from 'playwright-internal';13import { MyComponent } from './MyComponent.js';14const component = mountIncompleteClassComponent(MyComponent, { name: 'John' });15import { mountIncompleteClassComponent } from 'playwright-internal';16import { MyComponent } from './MyComponent.js';17const component = mountIncompleteClassComponent(MyComponent, { name: 'John' });18import { mountIncompleteClassComponent } from 'playwright-internal';19import { MyComponent } from './MyComponent.js';20const component = mountIncompleteClassComponent(MyComponent, { name: 'John' });21import { mountIncompleteClassComponent } from 'playwright-internal';22import { MyComponent } from './MyComponent.js';23const component = mountIncompleteClassComponent(MyComponent, { name: 'John' });

StackOverFlow community discussions

Questions

Discussion

How to run a list of test suites in a single file concurrently in jest?

Is it possible to get the selector from a locator object in playwright?

Jest + Playwright - Test callbacks of event-based DOM library

Running Playwright in Azure Function

firefox browser does not start in playwright

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})

https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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